package com.ruoyi.common.utils;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.util.ArrayList;
   import java.util.Calendar;
   import java.util.Date;
   import java.util.GregorianCalendar;
   import java.util.List;
import java.util.concurrent.TimeUnit;

public class DateUtils {
       // 获取当天的开始时间
      public static java.util.Date getDayBegin() {
      Calendar cal = new GregorianCalendar();
      cal.set(Calendar.HOUR_OF_DAY, 0);
      cal.set(Calendar.MINUTE, 0);
      cal.set(Calendar.SECOND, 0);
      cal.set(Calendar.MILLISECOND, 0);
      return cal.getTime();
      }

      // 获取当天的结束时间
      public static java.util.Date getDayEnd() {
      Calendar cal = new GregorianCalendar();
      cal.set(Calendar.HOUR_OF_DAY, 23);
      cal.set(Calendar.MINUTE, 59);
      cal.set(Calendar.SECOND, 59);
      return cal.getTime();
      }

      // 获取昨天的开始时间
      public static Date getBeginDayOfYesterday() {
      Calendar cal = new GregorianCalendar();
      cal.setTime(getDayBegin());
      cal.add(Calendar.DAY_OF_MONTH, -1);
      return cal.getTime();
      }

      // 获取昨天的结束时间
      public static Date getEndDayOfYesterDay() {
      Calendar cal = new GregorianCalendar();
      cal.setTime(getDayEnd());
      cal.add(Calendar.DAY_OF_MONTH, -1);
      return cal.getTime();
      }

      // 获取明天的开始时间
      public static Date getBeginDayOfTomorrow() {
      Calendar cal = new GregorianCalendar();
      cal.setTime(getDayBegin());
      cal.add(Calendar.DAY_OF_MONTH, 1);

      return cal.getTime();
      }

      // 获取明天的结束时间
      public static Date getEndDayOfTomorrow() {
      Calendar cal = new GregorianCalendar();
      cal.setTime(getDayEnd());
      cal.add(Calendar.DAY_OF_MONTH, 1);
      return cal.getTime();
      }

      // 获取本周的开始时间
      public static Date getBeginDayOfWeek() {
      Date date = new Date();
      if (date == null) {
          return null;
      }
      Calendar cal = Calendar.getInstance();
      cal.setTime(date);
      int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
      if (dayofweek == 1) {
          dayofweek += 7;
      }
      cal.add(Calendar.DATE, 2 - dayofweek);
      return getDayStartTime(cal.getTime());
      }

      // 获取本周的结束时间
      public static Date getEndDayOfWeek() {
      Calendar cal = Calendar.getInstance();
      cal.setTime(getBeginDayOfWeek());
      cal.add(Calendar.DAY_OF_WEEK, 6);
      Date weekEndSta = cal.getTime();
      return getDayEndTime(weekEndSta);
      }

      // 获取本月的开始时间
      public static Date getBeginDayOfMonth() {
      Calendar calendar = Calendar.getInstance();
      calendar.set(getNowYear(), getNowMonth() - 1, 1);
      return getDayStartTime(calendar.getTime());
      }

      // 获取本月的结束时间
      public static Date getEndDayOfMonth() {
      Calendar calendar = Calendar.getInstance();
      calendar.set(getNowYear(), getNowMonth() - 1, 1);
      int day = calendar.getActualMaximum(5);
      calendar.set(getNowYear(), getNowMonth() - 1, day);
      return getDayEndTime(calendar.getTime());
     }

     // 获取上个月的开始时间
     public static Date getBeginDayOfLastMonth() {
     Date date = new Date();
     Calendar calendar = Calendar.getInstance();
     calendar.setTime(date);
     calendar.add(calendar.MONTH, -1);
     calendar.set(calendar.DAY_OF_MONTH, 1);
     return getDayStartTime(calendar.getTime());
     }

     // 获取上个月的结束时间
     public static Date getEndDayOfLastMonth() {
     Date date = new Date();
     Calendar calendar = Calendar.getInstance();
     calendar.setTime(date);
     calendar.add(calendar.MONTH, -1);
     int day = calendar.getActualMaximum(5);
     calendar.set(calendar.DAY_OF_MONTH, day);
     return getDayEndTime(calendar.getTime());
     }

     // 获取本年的开始时间
     public static java.util.Date getBeginDayOfYear() {
     Calendar cal = Calendar.getInstance();
     cal.set(Calendar.YEAR, getNowYear());
     // cal.set
     cal.set(Calendar.MONTH, Calendar.JANUARY);
     cal.set(Calendar.DATE, 1);

     return getDayStartTime(cal.getTime());
     }

     // 获取本年的结束时间
     public static java.util.Date getEndDayOfYear() {
     Calendar cal = Calendar.getInstance();
     cal.set(Calendar.YEAR, getNowYear());
     cal.set(Calendar.MONTH, Calendar.DECEMBER);
     cal.set(Calendar.DATE, 31);
     return getDayEndTime(cal.getTime());
     }

     // 获取某个日期的开始时间
     public static Timestamp getDayStartTime(Date d) {
     Calendar calendar = Calendar.getInstance();
     if (null != d)
         calendar.setTime(d);
     calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0,
         0, 0);
     calendar.set(Calendar.MILLISECOND, 0);
     return new Timestamp(calendar.getTimeInMillis());
     }

     // 获取某个日期的结束时间
     public static Timestamp getDayEndTime(Date d) {
     Calendar calendar = Calendar.getInstance();
     if (null != d)
         calendar.setTime(d);
     calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23,
         59, 59);
     calendar.set(Calendar.MILLISECOND, 999);
     return new Timestamp(calendar.getTimeInMillis());
     }

     // 获取今年是哪一年
     public static Integer getNowYear() {
     Date date = new Date();
     GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
     gc.setTime(date);
     return Integer.valueOf(gc.get(1));
     }

     // 获取本月是哪一月
     public static int getNowMonth() {
     Date date = new Date();
     GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
     gc.setTime(date);
     return gc.get(2) + 1;
     }

     // 两个日期相减得到的天数
     public static int getDiffDays(Date beginDate, Date endDate) {

     if (beginDate == null || endDate == null) {
         throw new IllegalArgumentException("getDiffDays param is null!");
     }

     long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24);

     int days = new Long(diff).intValue();

     return days;
     }

     // 两个日期相减得到的毫秒数
     public static long dateDiff(Date beginDate, Date endDate) {
     long date1ms = beginDate.getTime();
     long date2ms = endDate.getTime();
     return date2ms - date1ms;
     }

     // 获取两个日期中的最大日期
     public static Date max(Date beginDate, Date endDate) {
     if (beginDate == null) {
         return endDate;
     }
     if (endDate == null) {
         return beginDate;
     }
     if (beginDate.after(endDate)) {
         return beginDate;
     }
     return endDate;
     }

     // 获取两个日期中的最小日期
     public static Date min(Date beginDate, Date endDate) {
     if (beginDate == null) {
         return endDate;
     }
     if (endDate == null) {
         return beginDate;
     }
     if (beginDate.after(endDate)) {
         return endDate;
     }
     return beginDate;
     }

     // 返回某月该季度的第一个月
     public static Date getFirstSeasonDate(Date date) {
     final int[] SEASON = { 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 };
     Calendar cal = Calendar.getInstance();
     cal.setTime(date);
     int sean = SEASON[cal.get(Calendar.MONTH)];
     cal.set(Calendar.MONTH, sean * 3 - 3);
     return cal.getTime();
     }

     // 返回某个日期下几天的日期
     public static Date getNextDay(Date date, int i) {
     Calendar cal = new GregorianCalendar();
     cal.setTime(date);
     cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
     return cal.getTime();
     }

     // 返回某个日期前几天的日期
     public static Date getFrontDay(Date date, int i) {
     Calendar cal = new GregorianCalendar();
     cal.setTime(date);
     cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
     return cal.getTime();
     }

     // 获取某年某月到某年某月按天的切片日期集合（间隔天数的日期集合）
     public static List getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) {
     List list = new ArrayList();
     if (beginYear == endYear) {
         for (int j = beginMonth; j <= endMonth; j++) {
         list.add(getTimeList(beginYear, j, k));

         }
     } else {
         {
         for (int j = beginMonth; j < 12; j++) {
             list.add(getTimeList(beginYear, j, k));
         }

         for (int i = beginYear + 1; i < endYear; i++) {
             for (int j = 0; j < 12; j++) {
             list.add(getTimeList(i, j, k));
             }
         }
         for (int j = 0; j <= endMonth; j++) {
             list.add(getTimeList(endYear, j, k));
         }
         }
     }
     return list;
     }

     // 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
     public static List getTimeList(int beginYear, int beginMonth, int k) {
     List list = new ArrayList();
     Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
     int max = begincal.getActualMaximum(Calendar.DATE);
     for (int i = 1; i < max; i = i + k) {
         list.add(begincal.getTime());
         begincal.add(Calendar.DATE, k);
     }
     begincal = new GregorianCalendar(beginYear, beginMonth, max);
     list.add(begincal.getTime());
     return list;
     }

     // 获取某年某月的第一天日期
     public static Date getStartMonthDate(int year, int month) {
     Calendar calendar = Calendar.getInstance();
     calendar.set(year, month - 1, 1, 0, 0, 0);
     return calendar.getTime();
     }

     // 获取某年某月的最后一天日期
     public static Date getEndMonthDate(int year, int month) {
     Calendar calendar = Calendar.getInstance();
     calendar.set(year, month - 1, 1);
     int day = calendar.getActualMaximum(5);
     calendar.set(year, month - 1, day, 23, 59, 59);
     return calendar.getTime();
     }
       public static String YYYY = "yyyy";

       public static String YYYY_MM = "yyyy-MM";

       public static String YYYY_MM_DD = "yyyy-MM-dd";

       public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

       public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

       private static String[] parsePatterns = {
               "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
               "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
               "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

       /**
        * 获取当前Date型日期
        *
        * @return Date() 当前日期
        */
       public static Date getNowDate()
       {
           return new Date();
       }

       /**
        * 获取当前日期, 默认格式为yyyy-MM-dd
        *
        * @return String
        */
       public static String getDate()
       {
           return dateTimeNow(YYYY_MM_DD);
       }

       /**
        * 获取当前日期 时间, 默认格式为yyyy-MM-dd HH:mm:ss
        * @return String
        */
       public static final String getTime()
       {
           return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
       }

       public static final String dateTimeNow()
       {
           return dateTimeNow(YYYYMMDDHHMMSS);
       }

       public static final String dateTimeNow(final String format)
       {
           return parseDateToStr(format, new Date());
       }

       public static final String dateTime(final Date date)
       {
           return parseDateToStr(YYYY_MM_DD, date);
       }

       public static final String parseDateToStr(final String format, final Date date)
       {
           return new SimpleDateFormat(format).format(date);
       }



       /**
        * 日期路径 即年/月/日 如2018/08/08
        */
       public static final String datePath()
       {
           Date now = new Date();
           return DateFormatUtils.format(now, "yyyy/MM/dd");
       }

       /**
        * 日期路径 即年/月/日 如20180808
        */
       public static final String dateTime()
       {
           Date now = new Date();
           return DateFormatUtils.format(now, "yyyyMMdd");
       }

       /**
        * 日期型字符串转化为日期 格式
        */
       public static Date parseDate(Object str)
       {
           if (str == null)
           {
               return null;
           }
           try
           {
               return parseDate(str.toString());
           }
           catch (Exception e)
           {
               return null;
           }
       }

       /**
        * 获取服务器启动时间
        */
       public static Date getServerStartDate()
       {
           long time = ManagementFactory.getRuntimeMXBean().getStartTime();
           return new Date(time);
       }

       /**
        * 计算相差天数
        */
       public static int differentDaysByMillisecond(Date date1, Date date2)
       {
           return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
       }

       /**
        * 计算两个时间差
        */
       public static String getDatePoor(Date endDate, Date nowDate)
       {
           long nd = 1000 * 24 * 60 * 60;
           long nh = 1000 * 60 * 60;
           long nm = 1000 * 60;
           // long ns = 1000;
           // 获得两个时间的毫秒时间差异
           long diff = endDate.getTime() - nowDate.getTime();
           // 计算差多少天
           long day = diff / nd;
           // 计算差多少小时
           long hour = diff % nd / nh;
           // 计算差多少分钟
           long min = diff % nd % nh / nm;
           // 计算差多少秒//输出结果
           // long sec = diff % nd % nh % nm / ns;
           return day + "天" + hour + "小时" + min + "分钟";
       }

       /**
        * 增加 LocalDateTime ==> Date
        */
       public static Date toDate(LocalDateTime temporalAccessor)
       {
           ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
           return Date.from(zdt.toInstant());
       }

       /**
        * 增加 LocalDate ==> Date
        */
       public static Date toDate(LocalDate temporalAccessor)
       {
           LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
           ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
           return Date.from(zdt.toInstant());
       }
    public static String timeDistance(Date startDate, Date endDate) {
        if (startDate == null || endDate == null) {
            throw new IllegalArgumentException("日期不能为空");
        }
        long duration = endDate.getTime() - startDate.getTime();

        long days = TimeUnit.MILLISECONDS.toDays(duration);
        duration -= TimeUnit.DAYS.toMillis(days);
        long hours = TimeUnit.MILLISECONDS.toHours(duration);
        duration -= TimeUnit.HOURS.toMillis(hours);
        long minutes = TimeUnit.MILLISECONDS.toMinutes(duration);
        duration -= TimeUnit.MINUTES.toMillis(minutes);
        long seconds = TimeUnit.MILLISECONDS.toSeconds(duration);

        return String.format("%d天%d小时%d分钟%d秒", days, hours, minutes, seconds);
    }


 }